A lightweight vehicle axle and a powerful brake system having the same

Abstract

The present invention discloses a lightweight vehicle bridge, comprising a vehicle bridge body (1), a drive box (2) and a flexible suspension mechanism (3), wherein the vehicle bridge body (1) comprises a drive shaft (11), the drive shaft (11) is connected to the drive box (2) through a special-shaped bearing (4) and is vertically arranged in the middle of the drive box (2), the drive box (2) extends from the center to both sides and a first connecting rod (21) and a second connecting rod (22) are respectively arranged at both ends of the drive box (2), the first connecting rod (21) and the second connecting rod (22) are respectively connected to a pair of wheel sets, and the wheel sets are installed on a wheel hub (6); a gear system is arranged in the drive box (2), and the gear system is mechanically connected to the first connecting rod (21) and the second connecting rod (22). A strong brake system comprises a lightweight vehicle bridge and a brake connecting rod (5), and the two ends of the brake connecting rod (5) are respectively bridged with the first connecting rod (21) and the second connecting rod (22).

Description

Technical Field

[0001] The invention belongs to the technical field of motor vehicle axles and motor vehicle brake devices, and in particular to a lightweight axle and a powerful brake system having the same. Background Art

[0002] Automobile axles are also called axles. They are connected to the frame (or load-bearing body) through suspension, and wheels are installed at both ends. The function of the axle is to bear the weight of the car and maintain the normal driving of the vehicle on the road. Axles include two types: integral and disconnected. The integral axle supports the body of the car through the suspension system at both ends, and is usually used with non-independent suspension. The disconnected axle is plugged into both sides of the body, and then each supports the body through the suspension system, and is usually used with independent suspension. According to the different driving modes, axles are divided into four types: steering axles, drive axles, steering drive axles and supporting axles. Most vehicles use front-rear drive (FR). Therefore, in rear-wheel drive cars, the rear axle that plays a load-bearing and driving role is used as a drive axle, and the front axle is used as a steering axle.

[0003] The axles of the axles in the prior art include the following two forms:

[0004] First, the two ends of the axle are connected to a pair of hubs or wheels. Since the country has some control over the weight of trucks, and large-tonnage trucks usually have multiple pairs of wheels, it is necessary to set up multiple axles accordingly, which unnecessarily increases the weight of the empty truck and thus reduces the relative transportation capacity;

[0005] Second, the double drive axle form is generally used on multi-axle trucks. It consists of a middle bridge and a rear bridge in series. However, the existing double drive axles for heavy-duty trucks in China (such as 10-ton double axles) are generally not equipped with ABS and automatic clearance adjustment arms, and the brake air chamber is placed obliquely, so the wheels are easily locked during braking, and it is not easy for heavy-duty trucks to brake. In addition, the double drive axle is not equipped with an automatic clearance adjustment arm, and the wear of the brake lining cannot be compensated in time, which affects the braking of heavy-duty trucks. When the brake air chamber of the dump truck is placed obliquely, a brake air chamber bracket that is inclined at a certain angle to the center of the bridge shell is usually used. When dumping hard objects such as sand and gravel, due to its inclined structure, the brake air chamber installed on it is too low to the ground, and rolling sand and gravel often hit the brake air chamber, causing the brake air chamber to brake poorly, and in severe cases, the entire brake air chamber is damaged. At the same time, this structure is not conducive to the installation and removal of the automatic clearance adjustment arm. Therefore, the braking performance of heavy-duty trucks is poor, affecting the safety and reliability of heavy-duty trucks.

[0006] In summary, the existing axles cannot well adapt to the transportation needs of reducing weight and improving transportation capacity during the operation of commercial or large-tonnage trucks, and at the same time cannot achieve the expected effect during the vehicle braking process. Summary of the invention

[0007] The present invention aims to at least solve the technical problems existing in the prior art; to this end, the present invention proposes a lightweight vehicle axle and a powerful brake system having the same, which are used to solve the technical problems of lightweighting the vehicle to improve the transportation capacity and powerful braking.

[0008] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the present invention, a lightweight axle is provided, comprising an axle body (1), a drive box (2) and a flexible suspension mechanism (3), wherein the axle body (1) comprises a drive shaft (11), the drive shaft (11) is connected to the drive box (2) via a special-shaped bearing (4) and is vertically arranged in the middle of the drive box (2), the drive box (2) extends to both sides along the center and a first connecting rod (21) and a second connecting rod (22) are respectively arranged at both ends of the drive box (2), the first connecting rod (21) and the second connecting rod (22) are respectively connected to a pair of wheel sets, and the wheel sets are mounted on a wheel hub (6); a gear system is arranged in the drive box (2), and the gear system is mechanically connected to the first connecting rod (21) and the second connecting rod (22).

[0009] Preferably, the first connecting rod (21) and the second connecting rod (22) can be expanded into more than two connecting rods through the gear system to connect more than two pairs of wheel sets; the number of the wheel sets corresponds to the number of the connecting rods.

[0010] Preferably, the gear system comprises a driving gear (23), a transmission gear (24) and a hub gear (25), wherein the driving gear (23) is one and is connected to the driving shaft (11) of the axle body (1) via the tapered bearing (4), the two ends of the driving gear (23) are respectively meshed with the two transmission gears (24), the side of the transmission gear (24) opposite to the driving gear (23) is respectively meshed with the two hub gears (25), and the two hub gears (25) are respectively connected to the first connecting rod (21) and the second connecting rod (22).

[0011] Preferably, the diameter of the driving gear (23) is greater than the diameters of the transmission gear (24) and the hub gear (25), and the number of teeth of the driving gear (23) is greater than the number of teeth of the transmission gear (24) and the hub gear (25).

[0012] Preferably, the flexible suspension mechanism (3) is arranged on the drive shaft (11), and comprises a stopper (31). The stopper (31) consists of two blocks, which are symmetrically arranged at the connection between the drive shaft (11) and the drive box (2); the block is arranged in a front-to-rear arrangement along the direction of travel of the vehicle, so as to control the height of the drive box (2) to be suspended up and down relative to the axle body (1).

[0013] Preferably, there are four blocks, which are arranged at equal intervals along the circumferential direction of the drive shaft (11), so that when the vehicle encounters more complex road conditions, the drive box (2) can be controlled to sway in multiple directions relative to the axle body (1).

[0014] Preferably, the height range of the upper and lower suspension is 0-3 cm, and the angle range of the upper and lower suspension is 0-30 degrees.

[0015] Preferably, the range of the suspension in the multiple directions is 0-5 cm from the center point of the axle body (1), and the angle range of the suspension in the multiple directions is 0-30 degrees with the center point of the axle body (1) as the center.

[0016] Preferably, the special-shaped bearing (4) is a conical bearing. When installed in place, the side of the conical gear with a smaller diameter is in contact with the side of the driving gear (23) away from the outer wheel pair, and the side of the conical gear with a larger diameter is connected to the driving shaft (11). The driving shaft (11) passes through the center of the driving gear (23) and the conical bearing and extends out of the side of the driving gear (23) facing the outer wheel pair.

[0017] According to a second aspect of the present invention, a strong brake system is provided, comprising the lightweight axle described in the first aspect and a brake link (5), wherein both ends of the brake link (5) are respectively bridged with the first connecting rod (21) and the second connecting rod (22).

[0018] 1. Compared with the prior art, the beneficial effects of the present invention are: by using a drive box, connecting the axle to the drive box, and using gear transmission in the drive box to drive the wheel set, one axle can drive multiple sets of wheel sets, thereby reducing the overall load weight and improving the vehicle's carrying capacity.

[0019] 2. Compared with the prior art, the beneficial effects of the present invention are: the drive box has a limited suspension height and angle relative to the axle, thereby improving the vehicle's passability under various road conditions, especially on undulating roads, and avoiding damage to the axle, gears and other transmission connecting parts caused by long-term unstable working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A structural stereogram of a lightweight axle (including a brake part) according to a preferred embodiment of the present invention;

[0021] Figure 2 This is a structural perspective view of a lightweight axle (including a brake portion) according to a preferred embodiment of the present invention.

[0022] Figure 3 The figure is a schematic diagram of a lightweight axle structure according to another embodiment of the present invention.

[0023] Figure numerals: 1, axle; 1', axle without transmission; 11, drive shaft; 2, drive box; 21, first connecting rod; 22, second connecting rod; 23, drive gear; 24, transmission gear; 25, hub gear; 3, flexible suspension mechanism; 4, special-shaped bearing; 5, brake connecting rod; 6, wheel hub. DETAILED DESCRIPTION

[0024] The technical scheme of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-2 The present application provides a lightweight axle, including an axle body 1, a drive box 2 and a flexible suspension mechanism 3, wherein the axle body 1 includes a drive shaft 11, the drive shaft 11 is connected to the drive box 2 through a special-shaped bearing 4 and is vertically arranged in the middle of the drive box 2, the drive box 2 extends to both sides along the center and a first connecting rod 21 and a second connecting rod 22 are respectively arranged at both ends of the drive box 2, the first connecting rod 21 and the second connecting rod 22 are respectively connected to a pair of wheel sets, and the wheel sets are installed on the wheel hub 6; a gear system is arranged in the drive box 2, and the gear system is mechanically connected to the first connecting rod 21 and the second connecting rod 22.

[0026] As a preferred embodiment, the first connecting rod 21 and the second connecting rod 22 can be expanded into more than two connecting rods through the gear system to connect more than two pairs of wheel sets; the number of the wheel sets corresponds to the number of the connecting rods.

[0027] As a preferred embodiment, the gear system includes a driving gear 23, a transmission gear 24 and a hub gear 25, wherein the driving gear 23 is one and is connected to the driving shaft 11 of the axle body 1 through the tapered bearing 4, the two ends of the driving gear 23 are respectively meshed with the two transmission gears 24, the side of the transmission gear 24 opposite to the driving gear 23 is respectively meshed with the two hub gears 25, and the two hub gears 25 are respectively connected to the first connecting rod 21 and the second connecting rod 22.

[0028] As a preferred embodiment, the diameter of the driving gear 23 is larger than the diameters of the transmission gear 24 and the hub gear 25 , and the number of teeth of the driving gear 23 is greater than the number of teeth of the transmission gear 24 and the hub gear 25 .

[0029] As a preferred embodiment, the flexible suspension mechanism 3 is arranged on the drive shaft 11, and includes two blocks 31, which are symmetrically arranged at the connection between the drive shaft 11 and the drive box 2. The block is arranged in the front and rear direction along the forward direction of the vehicle, so as to control the height of the drive box 2 relative to the axle body 1. When the vehicle encounters bumpy road conditions or climbing road conditions, the position relationship between the wheelset and the ground is adjusted by the up and down suspension of the axle to ensure the smooth operation of the vehicle.

[0030] As a preferred embodiment, there are four blocks, which are arranged at equal intervals along the circumferential direction of the drive shaft 11. Therefore, when the vehicle encounters more complex road conditions, the position relationship between the wheelset and the ground is adjusted by controlling the suspension of the drive box 2 in multiple directions relative to the axle body 1 to ensure smooth operation of the vehicle without hanging points.

[0031] As a preferred embodiment, the height range of the upper and lower suspension is 0-3 cm, and the angle range of the upper and lower suspension is 0-30 degrees.

[0032] As a preferred embodiment, the range of the suspension in the multiple directions is 0-5 cm from the center point of the axle body 1, and the angle range of the suspension in the multiple directions is 0-30 degrees with the center point of the axle body 1 as the center.

[0033] As a preferred embodiment, the special-shaped bearing 4 is a conical bearing. When installed in place, the side with a smaller diameter of the conical gear is in contact with the side of the drive gear 23 away from the outer wheel pair, and the side with a larger diameter of the conical gear is connected to the drive shaft 11. The drive shaft 11 passes through the center of the drive gear 23 and the conical bearing and extends out of the side of the drive gear 23 facing the outer wheel pair.

[0034] As another embodiment of the present invention, Figure 3 As shown, a lightweight axle further includes two axles 1' without drive installed on the vehicle body, a pair of first connecting rods 21 and a pair of second connecting rods 22 in the drive box 2 are respectively installed on the two axles 1' without drive, and the axle 1 converts the transmitted power into the rotation of the drive shaft 11, and drives the first connecting rod 21 and the second connecting rod 22 to rotate through the drive box 2. Compared with the traditional drive mode, only one axle 1 needs to convert the power into the rotation of the drive shaft 11, which reduces the rotation conversion components and achieves optimization.

[0035] Working principle of axle:

[0036] The axle of this embodiment is used as a drive axle in a rear-wheel drive vehicle. The function of the drive axle is to transmit the driving force transmitted by the engine to the driving wheels, realize the effect of reducing speed and increasing torque, and change the direction of power transmission at the same time. The composition of the axle, in addition to the description in the above specific embodiment, also includes a main reducer, a differential, a half shaft and a bridge housing. For rear-wheel drive vehicles, the installation position of the axle is to install the clutch, transmission, rear axle main reducer, inter-wheel differential, and drive axle assembly in the drive axle housing, located at the rear of the car, and the power is transmitted to the rear wheels. When in use, the power is input from the rear axle input flange, and is evenly distributed to multiple wheel pairs of the rear axle through the inter-wheel differential. The power transmitted to the rear axle is transmitted to the rear axle input flange, and then transmitted to the half shaft through the rear axle main reducer assembly and the inter-wheel differential, and finally transmitted to the wheel hub of the driving wheel through the flange plate at the outer end of the half shaft.

[0037] According to a second aspect of the present invention, a strong brake system is provided, comprising the lightweight axle and a brake link 5 as described in the first aspect, wherein both ends of the brake link 5 are respectively bridged with the first connecting rod 21 and the second connecting rod 22.

[0038] As a preferred embodiment, the brake connecting rod 5 is connected to brake drums (not shown in the figure) on both sides. The brake drum is fixed to the tire and rotates at the same speed. The inner surface of the brake drum is the position where the brake device generates a braking torque. The brake drum has a brake pad inside. The friction generated by the friction between the brake pad and the brake drum rotating with the wheel can quickly reduce the rotation speed of the wheel. The space between the wheel rims of a load-carrying vehicle is limited. In the case of obtaining the same braking torque, a brake drum is preferably used. Of course, if the wheel rim space requirement is not large, the brake drum can be replaced with a brake disc. In this case, there is no need to set the brake connecting rod 5. This solution is also within the protection scope of the present invention.

[0039] The braking principle when using a brake drum: when the brake pedal is pressed, the piston in the master brake cylinder pushes the brake fluid forward and generates pressure in the oil circuit; the pressure is transmitted to the brake slave cylinder piston of each wheel pair through the brake fluid; the brake slave cylinder piston pushes the brake pad outward, causing the brake pad to rub against the inner surface of the brake drum and generate sufficient friction to reduce the rotation speed of the wheel, thereby achieving the purpose of braking.

[0040] Working principle of disc brake: disc brake includes a brake disc connected to the wheel set and a brake caliper on the edge of the disc. When braking, high-pressure brake oil pushes the brake pad to clamp the brake disc to produce a braking effect.

[0041] Of course, as a preferred implementation, the powerful brake system is equipped with an ABS electronic controller, which includes an ABS ring gear and an ABS sensor, the ABS ring gear is installed on the wheel hub, the ABS sensor is installed on the bracket, and the bracket is welded on the bridge housing; an automatic clearance adjustment arm is installed on the brake air chamber; the brake air chamber adopts a vertical structure. It has the advantages of safe and reliable braking, automatic adjustment of brake clearance, simple maintenance, low cost and light weight.

[0042] 1. Compared with the prior art, the beneficial effect of this embodiment is that by using a drive box, connecting the axle to the drive box, and using gear transmission in the drive box to drive the wheel set, one axle can drive multiple sets of wheel sets, thereby reducing the overall load weight and improving the vehicle's carrying capacity.

[0043] 2. Compared with the prior art, the beneficial effects of this embodiment are: the drive box has a limited suspension height and angle relative to the axle, thereby improving the vehicle's passability under various road conditions, especially on undulating roads, and avoiding damage to the axle, gears and other transmission connecting parts caused by long-term unstable working conditions.

[0044] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A lightweight axle, characterized in that: The invention comprises an axle body (1), a drive box (2) and a flexible suspension mechanism (3), wherein the axle body (1) comprises a drive shaft (11), the drive shaft (11) is connected to the drive box (2) via a tapered bearing (4) and is vertically arranged in the middle of the drive box (2), the drive box (2) extends from the center to both sides and a first connecting rod (21) and a second connecting rod (22) are respectively arranged at both ends of the drive box (2), the first connecting rod (21) and the second connecting rod (22) are respectively connected to a pair of wheel sets, and the wheel sets are mounted on a wheel hub (6); a gear system is arranged in the drive box (2), and the gear system is mechanically connected to the first connecting rod (21) and the second connecting rod (22); the first connecting rod (21) and the second connecting rod (22) can be expanded into more than two connecting rods through the gear system to connect more than two pairs of wheel sets; the number of the wheel sets corresponds to the number of the connecting rods; the gear system comprises A driving gear (23), wherein the driving gear (23) is one and is connected to the driving shaft (11) of the axle body (1) through the tapered bearing (4); when the tapered bearing (4) is installed in place, the side of the tapered bearing (4) with a smaller diameter is in contact with the side of the driving gear (23) away from the outer wheel pair, and the side of the tapered bearing (4) with a larger diameter is connected to the driving shaft (11); the driving shaft (11) is passed through the center of the driving gear (23) and the tapered bearing (4) and extends out of the side of the driving gear (23) facing the outer wheel pair; the flexible suspension mechanism (3) is arranged on the driving shaft (11), including a stopper (31); the stopper (31) is two and is symmetrically attached to the connection between the driving shaft (11) and the driving box (2); the arrangement direction of the stopper is front-to-back arrangement along the forward direction of the vehicle, so as to control the height of the driving box (2) relative to the axle body (1) to sway up and down.

2. A lightweight vehicle axle according to claim 1, characterized in that: The gear system further comprises a transmission gear (24) and a hub gear (25), the two ends of the driving gear (23) are respectively meshed with the two transmission gears (24), the side of the transmission gear (24) opposite to the driving gear (23) is respectively meshed with the two hub gears (25), and the two hub gears (25) are respectively connected to the first connecting rod (21) and the second connecting rod (22).

3. A lightweight vehicle axle according to claim 2, characterized in that: The diameter of the driving gear (23) is greater than the diameters of the transmission gear (24) and the hub gear (25), and the number of teeth of the driving gear (23) is greater than the number of teeth of the transmission gear (24) and the hub gear (25).

4. The lightweight axle according to claim 1, characterized in that: There are four blocks (31) which are arranged at equal intervals along the circumferential direction of the drive shaft (11), so that when the vehicle encounters more complex road conditions, the drive box (2) can be controlled to sway in multiple directions relative to the axle body (1).

5. The lightweight axle according to claim 1, characterized in that: The height range of the upper and lower suspension is 0-3 cm, and the angle range of the upper and lower suspension is 0-30 degrees; the range of the upper and lower suspension is 0-5 cm from the center point of the axle body (1), and the angle range of the upper and lower suspension is 0-30 degrees with the center point of the axle body (1) as the center.

6. The lightweight axle according to claim 1, characterized in that: The invention also comprises two non-drive axles (1') mounted on the vehicle body, wherein a pair of first connecting rods (21) and a pair of second connecting rods (22) in the drive box (2) are respectively mounted on the two non-drive axles (1'), and the axle body (1) converts the transmitted power into the rotation of the drive shaft (11), and drives the first connecting rod (21) and the second connecting rod (22) to rotate through the drive box (2).

7. A powerful brake system, characterized in that: A lightweight vehicle axle and a brake connecting rod (5) as claimed in any one of claims 1 to 6 are provided, wherein two ends of the brake connecting rod (5) are respectively bridged with the first connecting rod (21) and the second connecting rod (22).

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